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All Journal Jurnal Kesehatan Lingkungan indonesia The Journal of Experimental Life Sciences (JELS) AL KAUNIYAH Research Journal of Life Science JFMR (Journal of Fisheries and Marine Research) Omni-Akuatika International Journal of Community Service Learning Wisesa: Jurnal Pengabdian Masyarakat Journal of Fisheries & Marine
Feni Iranawati, Feni
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Journal : Journal of Fisheries

 1 
Reproductive Cycle, Size at Maturity and Fecundity of Giuris margaritaceus in Limboto Lake Lamadi, Arafik; Iranawati, Feni; Sriwidodo, Maheno; Wiadnya, Dewa Gede Raka
Jurnal Ilmiah Perikanan dan Kelautan Vol. 16 No. 2 (2024): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v16i2.49345

Abstract

Graphical Abstract Highlight Research The size of the first mature gonads in hulu'u fish can be analyzed. Differences in sperm and egg size characterize sexual maturity. Sexual maturity is not influenced by season. Hulu'u fish have an asynchronous spawning type. Abstrack Understanding fish reproduction biology, particularly sexual maturity, the reproductive cycle, and fecundity, is useful for managing fisheries. The reproduction of Giuris margaritaceus in Limboto Lake is regrettably unknown. Over a year, fish specimens (N = 662) were gathered. They ranged in length from 6.5 to 20.9 cm (mean SD 10.9±2.5). Fecundity varied from 30,057 to 61,920. The first sexual maturity of male and female fish occurred at different sizes, 11.2 cm and 10.3 cm, respectively. This information is needed to determine this fish's lowest acceptable harvest length under the management aim to enter all-female fish for reproduction at least once. We estimated the reproductive of G. margaritaceus cycle using the size of the oocytes, histological analysis of the ovaries, and monthly mean GSI. These techniques produced the same reliable conclusion: G. margaritaceus can spawn yearly, with maximal between September and October. Based on this finding, spawners of Giuris margaritaceus can be kept from entering the reproductive stock between September and October. Future efforts to fine-tune fishing efforts for the effective management of G. margaritaceus may be aided by the study's findings.
The Genetic Diversity of Bali Sardinella (Sardinella lemuru) Caught at Bali Strait and Its Possible Relation to The Ocean Circulation Sartimbul, Aida; Hendiari, I Gusti Ayu Diah; Arthana, I Wayan; Kartika, Gde Raka Angga; Winata, Victor Adi; Pranowo, Widodo Setiyo; Susanto, Raden Dwi; Rohadi, Erfan; Muslihah, Nurul; Yona, Defri; Iranawati, Feni
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 2 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i2.56670

Abstract

Graphical Abstract Highlight Research A low sequence divergence of lemuru between Bali Strait and the northern latitude. S. lemuru migration route through ITF will maintain its nucleotide variation. The high haplotype diversity of lemuru is a testament to its adaptability. S. lemuru's high haplotype diversity supports their stock recovery in the Bali Strait. Two sardine species are morphologically and genetically highly distinct, even though they prefer overlapping water mass conditions from each other. Abstract Sardinella lemuru is known as the native pelagic fish of the Bali Strait. However, its presence has recently become challenging to find. This study aimed to validate S. lemuru using molecular taxonomy and link it to water circulations for sustainable management. It is the first study of relatively complete sequence data on S. lemuru in the Bali Strait. A total of 47 sequences were amplified using the control region gene of mitochondrial DNA. Other S. lemuru (n = 4) and Amblygaster sirm (n = 12) sequences were retrieved from GenBank. Low sequence divergence is observed in clade-1 of S. lemuru across the Bali Strait, Manado-Sulawesi, and Kudat-Malaysia. This is probably due to its migration using the main Indonesian ThroughFlow (ITF). There is an evolutionary divergence between two groups of S. lemurs, measuring 35.3%±4.1. The first signs of these cryptic groups were found at Canggu and Prigi, with 87 base-pair differences between the two groups. This study also presents strong evidence that A. sirm prefers overlapping water mass conditions with S. lemuru in the Bali Strait but is morphologically and genetically distinct. Notably, three samples of A. sirm in Kedonganan-Bali are clustered with other A. sirm locations passed by the primary and secondary South China Sea throughflow. The high genetic diversity of S. lemuru among Bali Strait sites demonstrates its adaptive ability, with scattered single-frequency haplotypes. The adaptive ability traits of S. lemuru support its stock recovery. The stock recovery recommendation is based on finding S. lemuru’s adaptive traits within their populations in suitable habitats and climatic conditions
Co-Authors Abu Bakar Sambah, Abu Bakar Aida Sartimbul Aliviyanti, Dian Anggara, Arik Arafik Lamadi Arifin, Sunanto As'adi, Muhammad Arif Ayuingtyas, Wulan Cahya Bambang Semedi Citra Satrya Dewi, Citra Satrya Daduk Setyohadi Defri Yona Dewa Gede Raka Wiadnya Dewi, Citra Satrya Utama Eko Sulkhani Yulianto Erfan Rohadi Fuad, Mochamad Arif Zainul Gannisa Alfin Cahyaningtyas, Gannisa Alfin Gde Raka Angga Kartika Hendiari, I Gusti Ayu Diah Hikmah, Syarifah I Wayan Arthana Julianinda, Yanida Azhari Julinda, Syarifah Hikmah Kartikaningsih, Hartati Kasitowati, Rarasrumdyah Ledhyane Ika Harlyan Lestariadi, Riski Agung Martilla, Denisa Amevia Putri Ananda Nabila, Risda Ayu Nurul Muslihah Oktavia, Yoan Rahman, Muhammad Arif Rarasrum Dyah Kasitowati, Rarasrum Dyah Rudianto Saputra, Dhira Kurniawan Sriwidodo, Maheno Sunardi Sunardi Susanto, Raden Dwi Syarifah Hikmah Julinda Sari Widodo S Pranowo Winata, Victor Adi Wirdana, Nurmalisa Yanuar, Adi Tiya